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  1. Article ; Online: Clustering of Covid-19 morbidity cases in Germany.

    Petrusevich, D A

    IOP conference series. Materials science and engineering

    2021  Volume 862, Issue 4, Page(s) 42037

    Abstract: The Covid-19 coronavirus has spread almost all over the world. Though it has been reported recently that the epidemic declines in China, in other countries it still hasn't achieved peak level. The data analysis methods may help struggling against the ... ...

    Abstract The Covid-19 coronavirus has spread almost all over the world. Though it has been reported recently that the epidemic declines in China, in other countries it still hasn't achieved peak level. The data analysis methods may help struggling against the disease. The Covid-19 Tracking Germany dataset has been handled in the research. It's daily refreshed dataset available at the kaggle.com site. It contains information on number of fallen ill people in Germany. The cases are grouped by federal land, city, age diapason and date. The main goal of the research is to underline differences in morbidity registered in different lands of Germany. There have been published new suggestions about connection between coronavirus morbidity and BCG vaccination. This question is also taken into account. Analysis based on the handled dataset is able to make only oblique conclusions because of lack of information. Differences in coronavirus morbidity in various regions and various age groups are highlighted. The regions of Germany are clustered into groups by gravity of recent situation.
    Language English
    Publishing date 2021-06-29
    Publishing country England
    Document type Journal Article
    ISSN 1757-899X
    ISSN (online) 1757-899X
    DOI 10.1088/1757-899X/862/4/042037
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  2. Article ; Online: Clustering of Covid-19 morbidity cases in Germany

    Petrusevich, D A

    IOP Conference Series: Materials Science and Engineering

    2020  Volume 862, Page(s) 42037

    Keywords covid19
    Publisher IOP Publishing
    Publishing country uk
    Document type Article ; Online
    ISSN 1757-899X
    DOI 10.1088/1757-899x/862/4/042037
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Difluoroborate-based bichromophores: Symmetry relaxation and two-photon absorption.

    Petrusevich, Elizaveta F / Głodek, Marta / Antoniak, Magda A / Muzioł, Tadeusz / Plażuk, Damian / Siomra, Agnieszka / Nyk, Marcin / Ośmiałowski, Borys / Zaleśny, Robert

    Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

    2023  Volume 295, Page(s) 122600

    Abstract: Given potential applications of multiphoton absorbers, in the present work we have studied the symmetry-relaxation effects in one- and two-photon absorption spectra in two bichromophore systems based on difluoroborate core linked by biphenylene or ... ...

    Abstract Given potential applications of multiphoton absorbers, in the present work we have studied the symmetry-relaxation effects in one- and two-photon absorption spectra in two bichromophore systems based on difluoroborate core linked by biphenylene or bianthracene moieties. We have employed a palette of experimental methods (synthesis, one- and two-photon spectroscopy, X-ray crystallography) and state-of-the-art computational methods to shed light on how symmetry relaxation, a result of twisting of building blocks, affects one- and two-photon absorption of the two studied fluorescent dyes. Electronic-structure calculations revealed that the planarity of central biphenyl moiety, as well as deviations from planarity up to 30-40 deg., ensure maximum values of two-photon transition strengths. Perpendicular arrangement of phenylene units in biphenylene moiety leads to 20% drop in the two-photon transition strengths. More detailed studies demonstrated that equilibrium structures of both compounds in chloroform solution show very different values of two-photon absorption cross sections at absorption band maxima, i.e. 224 GM for and 134 GM for biphenyle and bianthracene linkers, respectively. The latter value is in good agreement with experimental value obtained using Z-scan method. The difference in two-photon absorption cross section between both compounds can be rationalized based on equilibrium geometry differences, i.e. interplanar angle is 35 deg and 91 deg in the case of biphenylene and bianthracene moiety, respectively. It is thus not beneficial to introduce conformationally locked central linker based on bianthracene moiety.
    Language English
    Publishing date 2023-03-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 210413-1
    ISSN 1873-3557 ; 0370-8322 ; 0584-8539 ; 1386-1425
    ISSN (online) 1873-3557
    ISSN 0370-8322 ; 0584-8539 ; 1386-1425
    DOI 10.1016/j.saa.2023.122600
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  4. Article ; Online: Analysis of student’s final qualification theses using text loans detection systems

    D. A. Petrusevich / K. D. Shakhardin

    Statistika i Èkonomika, Vol 16, Iss 2, Pp 57-

    2019  Volume 64

    Abstract: In this paper there are results of the bachelor and master theses citing analysis. These students graduated from the Higher mathematics chair of the Russian Technological University in the summer of 2018. In this comparative analysis the dependencies of ... ...

    Abstract In this paper there are results of the bachelor and master theses citing analysis. These students graduated from the Higher mathematics chair of the Russian Technological University in the summer of 2018. In this comparative analysis the dependencies of thesis loan percent on parameters of students, statistical values of their theses are explored. This research is actual because of the progress and development of new informational technologies used in the educational system. Popularity of the text loan detection systems increases. Automatic plagiarism detection systems are intended to make educational process better, the text drawing search easier, to support the copyright laws and academical honesty. The percentage is given by two main Russian plagiarism detection systems: Antiplagiat and Rucontext. Connections between thesis parameters are explored. Advantages of each text loan detection systems are described. In this research there are the results of the pedagogical experiment aimed to analyze statistically the dependencies of the bachelor’s and master’s theses loan percentage which have been got from Antiplagiat and Rucontext systems on the author’s parameters, statistical values describing thesis text. The comparison between statistical results of these systems have been made. The conclusions about their advantages have been presented in the paper. In order to make the comparison methods of the mathematical statistics have been used. Numerical experiment has been provided by means of the packages of the R statistical language. The difference between text loan percentages in the Antiplagiat and Rucontext systems has been analyzed. It has been shown that it grows when length of the text becomes larger. The dependencies of the text loan percentage on the available parameters of the thesis author and text parameters have been presented. The dependencies types are the same for the both systems. Scale of the coefficients in the statistical dependencies is also the same. The difference is in the very set of the ...
    Keywords антиплагиат ; руконтекст ; оригинальность текста ; текстовое заимствование ; цитирование ; Economics as a science ; HB71-74
    Subject code 400
    Language Russian
    Publishing date 2019-05-01T00:00:00Z
    Publisher Plekhanov Russian University of Economics
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Controlling Two-Photon Action Cross Section by Changing a Single Heteroatom Position in Fluorescent Dyes.

    Ośmiałowski, Borys / Petrusevich, Elizaveta F / Antoniak, Magda A / Grela, Izabela / Bin Jassar, Mohammed A / Nyk, Marcin / Luis, Josep M / Jędrzejewska, Beata / Zaleśny, Robert / Jacquemin, Denis

    The journal of physical chemistry letters

    2020  Volume 11, Issue 15, Page(s) 5920–5925

    Abstract: The optimization of nonlinear optical properties for "real-life" applications remains a key challenge for both experimental and theoretical approaches. In particular, for two-photon processes, maximizing the two-photon action cross section (TPACS), the ... ...

    Abstract The optimization of nonlinear optical properties for "real-life" applications remains a key challenge for both experimental and theoretical approaches. In particular, for two-photon processes, maximizing the two-photon action cross section (TPACS), the figure of merit for two-photon bioimaging spectroscopy, requires simultaneously controlling all its components. In the present Letter, a series of difluoroborates presenting various heterocyclic rings as an electron acceptor have been synthesized and their absorption, fluorescence, photoisomerization, and two-photon absorption features have been analyzed using both experimental and theoretical approaches. Our results demonstrate that the TPACS values can be fine-tuned by changing the position of a single heteroatom, which alters the fluorescence quantum yields without changing the intrinsic two-photon absorption cross section. This approach offers a new strategy for optimizing TPACS.
    MeSH term(s) Borates/chemistry ; Cinnamates/chemistry ; Fluorescent Dyes/chemistry ; Furans/chemistry ; Isomerism ; Models, Molecular ; Molecular Structure ; Photochemical Processes ; Photons ; Spectrometry, Fluorescence ; Structure-Activity Relationship
    Chemical Substances Borates ; Cinnamates ; Fluorescent Dyes ; Furans ; 2-methyltetrahydrofuran (FCD0VD8ALF) ; fluoroboric acid (H429WZ9FBQ)
    Language English
    Publishing date 2020-07-13
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.0c01438
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  6. Article ; Online: Sandwich double-decker Er(iii) and Yb(iii) complexes containing naphthalocyanine moiety: synthesis and investigation of the effect of a paramagnetic metal center.

    Dubinina, Tatiana V / Kosov, Anton D / Petrusevich, Elizaveta F / Borisova, Nataliya E / Trigub, Alexander L / Mamin, George V / Gilmutdinov, Ildar F / Masitov, Artem A / Tokarev, Sergey V / Pushkarev, Victor E / Tomilova, Larisa G

    Dalton transactions (Cambridge, England : 2003)

    2019  Volume 48, Issue 35, Page(s) 13413–13422

    Abstract: Novel heteroleptic Er(iii) and Yb(iii) naphthalocyaninato-phthalocyaninates containing an octa-phenyl or octa-phenoxysubstituted naphthalocyanine deck were synthesised and identified ... ...

    Abstract Novel heteroleptic Er(iii) and Yb(iii) naphthalocyaninato-phthalocyaninates containing an octa-phenyl or octa-phenoxysubstituted naphthalocyanine deck were synthesised and identified by
    Language English
    Publishing date 2019-08-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/c9dt03226f
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  7. Article ; Online: Sea-ice and water dynamics and moonlight impact the acoustic backscatter diurnal signal over the eastern Beaufort Sea continental slope

    I. A. Dmitrenko / V. Petrusevich / G. Darnis / S. A. Kirillov / A. S. Komarov / J. K. Ehn / A. Forest / L. Fortier / S. Rysgaard / D. G. Barber

    Ocean Science, Vol 16, Pp 1261-

    2020  Volume 1283

    Abstract: A 2-year-long time series of currents and acoustic backscatter from an acoustic Doppler current profiler, moored over the eastern Beaufort Sea continental slope from October 2003 to September 2005, were used to assess the dynamics and variability of the ... ...

    Abstract A 2-year-long time series of currents and acoustic backscatter from an acoustic Doppler current profiler, moored over the eastern Beaufort Sea continental slope from October 2003 to September 2005, were used to assess the dynamics and variability of the sound-scattering layer. It has been shown that acoustic backscatter is dominated by a synchronized diel vertical migration (DVM) of zooplankton. Our results show that DVM timings (i) were synchronous with sunlight and (ii) were modified by moonlight and sea ice, which attenuates light transmission to the water column. Moreover, DVM is modified or completely disrupted during highly energetic current events. Thicker ice observed during winter–spring 2005 lowered the backscatter values but favored extending DVM toward the midnight sun. In contrast to many previous studies, DVM occurred through the intermediate water layer during the ice-free season of the midnight sun in 2004. In 2005, the midnight-sun DVM was likely impacted by a high acoustic scattering generated by suspended particles. During full moon at low cloud cover, the nighttime moonlight illuminance led to zooplankton avoidance of the subsurface layer, disrupting DVM. Moreover, DVM was disrupted by upwelling, downwelling, and eddy passing. We suggest that these deviations are consistent with DVM adjusting to avoid enhanced water dynamics. For upwelling and downwelling, zooplankton likely respond to the along-slope water dynamics dominated by surface- and depth-intensified flow, respectively. This drives zooplankton to adjust DVM by aggregating in the low or upper intermediate water layer for upwelling and downwelling, respectively. The baroclinic eddy reversed DVM below the eddy core.
    Keywords Geography. Anthropology. Recreation ; G ; Environmental sciences ; GE1-350
    Subject code 551 ; 550
    Language English
    Publishing date 2020-10-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
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  8. Article ; Online: Impact of tidal dynamics on diel vertical migration of zooplankton in Hudson Bay

    V. Y. Petrusevich / I. A. Dmitrenko / A. Niemi / S. A. Kirillov / C. M. Kamula / Z. Z. A. Kuzyk / D. G. Barber / J. K. Ehn

    Ocean Science, Vol 16, Pp 337-

    2020  Volume 353

    Abstract: Hudson Bay is a large seasonally ice-covered Canadian inland sea connected to the Arctic Ocean and North Atlantic through Foxe Basin and Hudson Strait. This study investigates zooplankton distribution, dynamics, and factors controlling them during open- ... ...

    Abstract Hudson Bay is a large seasonally ice-covered Canadian inland sea connected to the Arctic Ocean and North Atlantic through Foxe Basin and Hudson Strait. This study investigates zooplankton distribution, dynamics, and factors controlling them during open-water and ice cover periods (from September 2016 to October 2017) in Hudson Bay. A mooring equipped with two acoustic Doppler current profilers (ADCPs) and a sediment trap was deployed in September 2016 in Hudson Bay ∼190 km northeast from the port of Churchill. The backscatter intensity and vertical velocity time series showed a pattern typical for zooplankton diel vertical migration (DVM). The sediment trap collected five zooplankton taxa including two calanoid copepods ( Calanus glacialis and Pseudocalanus spp.), a pelagic sea snail ( Limacina helicina ), a gelatinous arrow worm ( Parasagitta elegans ), and an amphipod ( Themisto libellula ). From the acquired acoustic data we observed the interaction of DVM with multiple factors including lunar light, tides, and water and sea ice dynamics. Solar illuminance was the major factor determining migration pattern, but unlike at some other polar and subpolar regions, moonlight had little effect on DVM, while tidal dynamics are important. The presented data constitute the first-ever observed DVM in Hudson Bay during winter and its interaction with the tidal dynamics.
    Keywords Geography. Anthropology. Recreation ; G ; Environmental sciences ; GE1-350
    Subject code 551
    Language English
    Publishing date 2020-03-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Heteroleptic naphthalo-phthalocyaninates of lutetium: synthesis and spectral and conductivity properties.

    Dubinina, Tatiana V / Kosov, Anton D / Petrusevich, Elizaveta F / Maklakov, Sergey S / Borisova, Nataliya E / Tomilova, Larisa G / Zefirov, Nikolay S

    Dalton transactions (Cambridge, England : 2003)

    2015  Volume 44, Issue 17, Page(s) 7973–7981

    Abstract: Novel heteroleptic naphthalo-phthalocyaninates of lutetium possessing a symmetrical substituted naphthalocyanine deck were synthesized on the basis of two preformed synthetic blocks: naphthalocyanine ligand and lutetium phthalocyaninates. The compounds ... ...

    Abstract Novel heteroleptic naphthalo-phthalocyaninates of lutetium possessing a symmetrical substituted naphthalocyanine deck were synthesized on the basis of two preformed synthetic blocks: naphthalocyanine ligand and lutetium phthalocyaninates. The compounds obtained were characterized by (1)H NMR and high-resolution MALDI-TOF/TOF mass spectrometry. The correlation between the nature of the substituents and the spectral properties of the target complexes was determined by the introduction of electron-donating (aryl-, aryloxy-) or electron-withdrawing (chloro-) substituents into the phthalocyanine deck. In addition, the nature of peripheral substituents was shown not to affect drastically the phthalocyanine conductivity and activation energy. Conductivity properties depend on thin film morphology which, in turn, relies on intermolecular π-π interactions.
    Language English
    Publishing date 2015-05-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/c5dt00635j
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  10. Article: Redkoe nabliudenie zheludochnogo krovotecheniia.

    Iatsenko, A A / Iatsenko, E A / Kot, V A / Petrusevich, I D

    Klinicheskaia khirurgiia

    1988  , Issue 6, Page(s) 66

    Title translation A rare case of gastric hemorrhage.
    MeSH term(s) Animals ; Gastrointestinal Hemorrhage/etiology ; Gastrointestinal Hemorrhage/parasitology ; Humans ; Infant ; Leeches ; Male ; Stomach Diseases/etiology ; Stomach Diseases/parasitology
    Language Russian
    Publishing date 1988
    Publishing country Ukraine
    Document type Case Reports ; Journal Article
    ZDB-ID 411775-x
    ISSN 0023-2130
    ISSN 0023-2130
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    In stock of ZB MED Cologne/Königswinter

    Zs.B 734: Show issues Location:
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    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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